I was just in search of one myself. Maxpedition has a "Universal" flashlight/baton carrier but for me I found it Velcroed to death. Velcro
and para cord dont mix well. Rip-Offs has a nice one. Google their page
Rip-Offs.
I like it because I can leave the buckle loose for when I'm repeatedly taking the light in and out of the sheath. When I'm done, pull the strap and the lights not going anywhere.